Alex took a second to quietly think to himself about what Tide was offering. Did he really want this merman who he’d just met to turn him into a merman as well? He tried to think of excuses, but nothing came to mind other than “I need to get back home.” But, did he really want to leave this world of gay fantasy creatures? Staying here in this world as a merman with a very attractive lover sounded a lot more appealing than his life back on Earth.
Alex nodded his head. “Okay,” he said. “I want to be a merman.” A bright smile appeared on Tide’s face as he threw his arms around Alex’s shoulders, pulling the human into a loving embrace.
“You’re not going to regret this,” Tide said, placing kisses all over Alex’s cheeks and neck. The horny merman slid forward slightly, pressing their cocks together and beginning to guide Alex’s cock towards the slit in his scales. Alex was confused as he felt the head of his cock hit the base of Tide’s, only for Tide to pull him in closer. The young human let out a moan as the head of his cock slipped into Tide’s slit. The spongy, slick pouch inside with the merman’s cock felt so inviting, making Alex thrust to get a bit more of his length in.
Tide moved in to kiss Alex, pressing their lips together passionately as he wriggled back and forth to get Alex’s cock deeper inside him. It was getting harder and harder to stay afloat, as the two began moving into deeper water. Placing a hand on Alex’s shoulder and another on the back of his head, Tide began guiding the human below the surface. While a small part of Alex was scared that Tide was actually a siren luring him to his death, the young man chose to trust his aquatic companion and willingly sank beneath the surface.
As the two lovers sank to the bottom, Alex continued to wildly thrust his length deeper and deeper into the merman’s slit; the intense friction and the silky inside only making things better. Then, Tide threw his head back, moaning hard as he reached his climax. Thick ropes of cum came out of the merman’s cock, covering Alex’s chest, stomach, and face, but that wasn’t all. A few seconds later, a thick, musky cloud erupted from the merman’s slit, encompassing the two lovers. Tide reached out and began to caress the cum on his future lover’s chest, watching as it seemed to soak into Alex’s skin with ease.
A pleasurable sensation filled Alex’s body as the young man continued to thrust into Tide’s slit. With each thrust he made, his cock seemed to get longer and longer. The rounded, mushroom-shaped head grew pointed as the skin grew rubbery and firm. The rest of his cock seemed to fill out and anchor to his groin as his balls were sucked inside of him.
Alex’s body tingled slightly as he continued to thrust deep into Tide’s slit. He felt Tide’s cock hardening again, nudging his own cock slightly as the merman began to thrust his cock into Alex’s skin, hitting the spot just above where his balls used to be. The feeling was strangely pleasurable, driving Alex to increase the speed and power of his thrusts. Tide continued to hit the same spot over and over again until the skin began to flex in, growing softer, thicker, and spongier. It hugged the base of Alex’s cock, creating a mound around it.
Focusing on the prize, Tide continued to thrust his member into Alex’s forming slit. First an inch went in, then two, then three. As Tide’s cock made progress, sapphire blue splotches began to appear around Alex’s cock, spreading quickly around his hips and ass. The skin around the quickly spreading splotches began to toughen, taking on a rubbery consistency. Alex soon found it getting harder and harder for his legs to move independently, eventually beginning to kick them in unison.
Tide’s cock was now deep inside Alex’s new slit, and Alex’s was still deep inside his. The two worked in harmony, thrusting in and out in perfect sync. Alex fully leaned his chest against Tide’s, his lower body feeling like jelly. With each whip of his lower body, Alex felt his thighs fusing and his ankles locking together. The outer edges of his legs had turned a brilliant sapphire color with the inside becoming a slightly softer shade of blue. His skin began to melt together, toughening and smoothing out as legs became one. The scales began to toughen in order to protect the skin underneath, which was now shifting into pure muscle. His bones began to lengthen, gaining new joints and segments as they completely reshaped. Alex’s feet flattened, fanning out into fins as his toes became webbed together before disappearing entirely. End to end, Alex was pushing well past eight feet in length, his new tail long and elegant just like Tide’s.
The overwhelming pleasure that he was feeling caused Alex to moan, only for him to quickly realize that he no longer needed to go back to the surface for air. He was able to breathe underwater as if he were still on land. He could feel his ears changing slightly as his hearing became better and better, and his eyesight was now crystal clear, the water having no effect on his vision. Alex felt his orgasm rapidly approaching, the overwhelming pleasure becoming too hard to resist. Alex threw back his head, arching his spine, and cried out as he felt the most powerful orgasm of his life. The small amount of remaining human cum came first, only to be quickly followed by a massive amount of thick, potent, merman cum. This was then followed by a thick, musky cloud bursting from Alex’s slit, encompassing the two lovers.
Soaking in the pure bliss that followed their orgasms, Alex and Tide began passionately kissing each other again, their hands exploring each other’s bodies as Alex's final changes began to take effect. His biceps and triceps thickened slightly as his pecs and abs became more defined. His hair even grew a bit longer, growing to the same length as Tide’s hair.
The two mermen held each other close, keeping their cocks embedded in each other’s slits. Neither of them wanted to move, and for good reason.
“That...that was fucking incredible,” Alex said, kissing Tide’s cheek. “Every part of that felt so incredible, and I feel so...alive.”
Tide chuckled, running his fingers through Alex’s hair. “I’m glad you enjoyed it,” he said, holding his lover close. “I know that I sure did.”
Alex smiled and kissed his newfound lover again, happy to have met and joined him beneath the waves.